Transmission device



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M- VAN R0005!!- 9% 9 1953 a... ROBIN ET AL 15 9 7 TRANSMISSION DEVICEOriginal Filed Dec. 13, 1939 v 2 Sheets-Sheet 2 Patented Oct. 16, 1951TRANSMISSION DEVICE Leo Robin and Mathieu van Roggen, Sprimont, Belgium;vested in the Attorney General of the United States Original applicationDecember 13, 1939, Serial 309,100. Divided and this application March24, 1945, Serial No. 584,617. gium December 13, 1938 In Bel- 4 Claims.(01. 74-675) This application is a division of Serial #309,100, filedDecember 13, 1939, now Patent #2,372,226, March 27, 1945.

The present invention relates to power devices for driving receivermechanisms.

Its chief object is to provide a device of this kind which is betteradapted to meet the requirements of practice than those used up to thistime and in particular which is capable to increase the range of torquesand speeds which canbe obtained for the receiver mechanism.

Preferred embodiments of the present invention will be hereinafterdescribed with reference to the accompanying drawings, given merely byway of example and in which:

Fig. 1 is an axial sectional view of a device according to ourinvention;

Fig. 2 is a diagrammatical view ShOWing the relative arrangement of someelements of the device of Fig. 1;

Figs. 3 and 4 are two views similar to Figs. 1 and 2, respectively, butrelating to another embodiment of our invention.

In the construction shown by Figs. 1 and 2, the

receiver member to be driven by our device is receiver shaft 2.

Our device includes a frame 15 in which are journalled two shaft membersI and I both coaxial with receiver shaft 2.

Free-wheel devices |3l4 and lBll are interposed between, respectively,shaft member I and frame 55 and shaft member I and said frame 15 so asto make it possible for said shaft members to rotate with respect tosaid frame only in one direction, the same for both shaft memhere, forinstance the clockwise direction as shown by Fig. 2. V

Shaft members I and l are interconnected b a sun-and-planet wheel systemincluding three parts mounted in said frame concentrically with saidshaft members, to wit:

A sun-wheel part 3 keyed on or rigid with shaft member 1 An orbit wheelpart 5 rigid with the othershaft member I; and

A planet-wheel carrier 6 rigid with'receiver shaft 2. In thisplanet-wheel carrier 6 are journalled planet-wheels 4 in mesh with bothsaid sun-wheel 3 and said orbit wheel 5.

An electric motor M is mounted on frame [5 to drive shaft i this motorhaving for instance its field winding rigid with frame and its armaturerigid with said shaft member I Another electric motor M also mounted onframe" 15, is similarly adapted to drive shaft member 1 i Switches W andW make it possible to supply at will said motors with current.

Such a device works as follows:

Motor M isfirst started by means of switch W Then, when the receivermechanism mounted on shaft 2 has been started, the second motor M isstarted by means of switch W In the embodiment illustrated by Figs. 3-4,the general arrangement is the same, but a single electric motor isprovided, the rotor R and the stator S of which areadapted to actrespectively on the two above mentioned shafts, the whole working forinstance in'the following manner:

Through the medium of switch W, current is distributed in such mannerthat the rotor first turns in the clockwise direction (simple arrow ofFig. 4). The rotor is then free to turn and the reaction is supported byfree-wheel device I3-l4, which coacts with the orbit wheel. We thusobtain a first speed of shaft 2.

When the maximum speed has been reached, the direction of working of themotor is reversed by means of switch W, which causes the rotor to stopin view of the action of free-wheel device 16-41. The stator then startsturning and produces', through the working of the epicycloidal gear,'asecond speed of shaft 2 which is slightly lower than that of the motor;in a proportion which depends upon the characteristics of theepicy-cloidal gear.

In any case, whatever be the particular embodiment that is chosen, it ispossible, according to the present invention, to transmit energy with arange as wide as possible, both of the torques and of the speeds'of theoutput shaft.

It will be readily understood that such an invention can be given manydifferent applications and that it will be particularly interesting whenthe inertia per H; P., that is to say the weight that is to be moved, inthe case of vehicles, is of high value, or again when the startingtorques are of considerable value as compared to the. normal workingtorques. j

For instance, in particular, the invention is especially well adapted tothe traction of vehicles, either road vehicles or track vehicles, such,for instance as railroadautomotive cars.

What we claim is:

1. A device of the type described for transmission of driving power to areceiver member which comprises, in combination, a stationary frame, twoconcentric shaft members, free-wheel devices between said respectiveshaft members 3 and said frame to permit each of said shaft members torotate only in one direction, the same for both, with respect to saidframe, a sun-andplanet wheel system including three parts journalled insaid frame concentrically with said shaft members, to wit, a sun-wheelpart, an orbit-Wheel part and a planet-wheel carrier and planet wheelsjournalled in said carrier part and interposed between said sun-wheeland orbitwheel parts, one of said wheel parts being keyed on one of saidshaft members, another of said three parts being coupled with one of theremaining two members and the third part being coupled with the other ofthe remaining two members, to ensure the drive of said receiver memberin the same direction when either of said shaft members rotates in thedirection permitted by the free-wheel device associated therewith, anelectric motor having both its armature and its field winding journalledin said frame and coupied with said respective shaft members coaxiallytherewith, to drive each of them against the reaction supplied by thefree wheel device associated with the other and switch means forreversing current distribution in said field winding to ensure the driveof each of said shaft members alternately.

2. A device of the type described for transmission of driving power to areceiver member which comprises, in combination, a stationary frame, twoconcentric shaft members, free-wheel devices between said respectiveshaft members and said frame to permit each of said shaft members torotate only in one direction with respect to said frame, asun-and-planet wheel system including three parts journalled in saidframe concentrically with said shaft members, to wit, a sun-wheel part,an orbit-wheel part and a planet-wheel carrier and planet wheelsjournailed in .said carrier part and interposed between said sun-wheeland orbit-wheel parts, one of said wheel parts being keyed on one ofsaid shaft members, another of said three parts being coupled with oneof the remaining two members and the third part being coupled with theother of the remaining two members, to ensure the drive of said receivermember in the same direction when either of said shaft members rotatesin the direction permitted by the free-wheel device associatedtherewith, two electric motors mounted in said frame and arranged todrive said respective shaft members separately, each against thereaction supplied by the free-wheel devices associated with the otherone and switch meansfor supplying current to said electric motor meansto ensure the drive of each of said shaft members successively.

3. A device of the type described for transmission of driving power to areceiver member which comprises, in combination, a stationary frame, twoconcentric shaft members mounted in said frame, a free-wheel devicebetween each of said shaft members and said frame to permit rotation ofsaid shaft members with respect to said frame only in one direction, thesame for both shaft members, a sun-and-planet wheel 4 system includingthree parts journalled in said frame concentrically with said shaftmembers, to wit, a sun-wheel part coupled with one of said shaftmembers, an orbit-wheel part coupled with the other shaft member and aplanet wheel carrier coupled with said receiver member, saidsunand-planet wheel system including planet wheels journalled in saidcarrier and interposed between said sun-wheel and said orbit-wheel, andcontrollable variable action electric motor means mounted on said shaftmembers for driving with respect to said frame in the above mentioneddirection either the second mentioned shaft member alone or the firstmentioned shaft member, whereby different ratio transmissions can beobtained by varying the action of said motor means.

4. A device of the type described for transmission of driving power to areceiver member which comprises, in combination, a stationary frame, twoconcentric shaft members mounted in said frame, a free-wheel devicebetween each of said shaft members and said frame to permit rotation ofsaid shaft members with respect to said frame only in one direction, thesame for both shaft members, a sun-and-planet wheel system includingthree parts journalled in said frame concentrically with said shaftmembers, to wit, a sun-wheel part coupled with one of said shaftmembers, an orbit-wheel part coupled with the other shaft member and aplanet wheel carrier coupled with said receiver member, saidsunand-planet wheel system including planet wheels journalled in saidcarrier and interposed between said sun-wheel and said orbit-wheel, anda reversible electric motor having its armature and field windingsjournalled in said frame and coupled with said-respective shaft memberscoaxially therewith for driving with respect to said frame in the abovementioned direction either one shaft member alone or the other shaftmember whereby diiferent ratios of transmission can be obtained byreversing said motor.

LEO ROBIN. MA'I'HIEU VAN ROGGEN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 516,916 Coleman Mar. 20, 1894516,917 Coleman Mar. 20, 1894 732,377 Rowntree June 30, 1903 1,076,416Gammeter Oct. 21, 1913 1,076,632 Gammeter Oct. 21, 1913 1,263,125 SawyerApr. 16, 1918 1,540,610 Desmoulins June 2, 1925 1,696,836 Bushyager Dec.25, 1928 1,837,803 Weston Dec. 22, 1931 2,372,226 Robin et a1 Mar. 27,1945 FOREIGN PATENTS Number Country Date 399,223 Great Britain Oct. 2,1933 407,760 Great Britain Mar. 29, 1934

